Follow these steps to change layer properties:
Use the example derived from the first example from Chapter 1, Getting Started with OpenLayers, also available at chapter04/2360_04_01_changing_layer_properties.html
:
<!doctype html> <html lang="en"> <head> <title>Simple example</title> <link rel="stylesheet" href="../assets/ol3/css/ol.css" type="text/css" /> <link rel="stylesheet" href="../assets/css/samples.css" type="text/css" /> </head> <body> <div id="map" class="map"></div> <script src="../assets/ol3/ol.js" ></script> <script> var osmLayer = new ol.layer.Tile({ source: new ol.source.OSM(), opacity: 0.6, brightness: 0.2 }); var view = new ol.View({ center: ol.proj.transform([-1.8118500054456526, 52.4431409750608], 'EPSG:4326', 'EPSG:3857'), zoom: 6 });...